v1.2.0 release candidate

[haykh]

Systemic Changes:

• Add a list of explicitly supported (constantly upgraded) problem generators (Supported Problem Generators cleaned #92)

New Features:

• GR #83
• Position-binned discretized phase-space output #48
• Checkpoint dumping (restart files) #67
• Add bulk velocity as moments to output #70
• alternative MPI communications for particles New Particle Send/Recv Routine #77
• field-downsampling in the output Downsampling of fields on output #73
• writing into separate files Output to separate files #75
• powerlaw injector Add a powerlaw injection to the archetypes #71
• Two-temperature Maxwellian (being tested in Supported Problem Generators cleaned #92)
• Option to disable GPU-aware-MPI (Optionally turn off GPU-aware MPI #105)
• Custom injector (being tested in Supported Problem Generators cleaned #92)
• Particle purge routine (being developed in Supported Problem Generators cleaned #92) (documented, not necessary to archetype)
• Box-reduced stats output (Stats output #106)

Improvements:

• New zig-zag pusher with no explicit coordinate conversion (Zig-Zag Deposit + Cartesian Coordinate Push Without Explicit Coordinate Conversion #98)
• more consistent and general boundary condition setters (worked in magnetized shock #72)
• check for dx=dy=dz in Minkowski now with accuracy (fixed with 5cf30af)
• Log level controlled from input (ec7ff77)

Major bugs:

• Linking error #62
• MPI error with mpich #60 (moved to v1.1.1)
• potential bug in field boundaries magnetized shock #72
• no need for explicit HDF5_ROOT in cmake Cmake Compiling Error for Loading Hdf5 Module for Output #82 (solved in Cleanup + Cosmetic changes #90)
• Errors in for certain MPI decompositions #74 (fixed in Fixes the checking of dx_min between domains #89)

Minor bugs:

• warning for template declaration bugfix for duplicate symbols #81

Potentially breaking changes

• particle payloads are now a normal 2D Kokkos::View indexed as (prtl index, payload index)